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// Copyright 2023 Klemens Morgenstern
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/system/result.hpp>
#include <boost/core/lightweight_test.hpp>
#include <string>
using namespace boost::system;
struct X
{
int v_;
explicit X( int v = 0 ): v_( v ) {}
X( X const& ) = delete;
X& operator=( X const& ) = delete;
X( X && ) = default;
X& operator=( X && ) = default;
};
int main()
{
{
result<std::string, X> r( 1 );
BOOST_TEST( !r.has_value() );
BOOST_TEST( r.has_error() );
BOOST_TEST_EQ( std::move( r ).error().v_, 1 );
}
{
BOOST_TEST(( !result<std::string, X>( 1 ).has_value() ));
BOOST_TEST(( result<std::string, X>( 1 ).has_error() ));
BOOST_TEST_EQ( (result<std::string, X>( 1 ).error().v_), 1 );
}
{
result<std::string, X> r( "s" );
BOOST_TEST( r.has_value() );
BOOST_TEST( !r.has_error() );
BOOST_TEST_EQ( std::move( r ).error().v_, 0 );
}
{
BOOST_TEST(( result<std::string, X>( "s" ).has_value() ));
BOOST_TEST(( !result<std::string, X>( "s" ).has_error() ));
BOOST_TEST_EQ( (result<std::string, X>( "s" ).error().v_), 0 );
}
{
result<void, X> r( 1 );
BOOST_TEST( !r.has_value() );
BOOST_TEST( r.has_error() );
BOOST_TEST_EQ( std::move( r ).error().v_, 1 );
}
{
BOOST_TEST(( !result<void, X>( 1 ).has_value() ));
BOOST_TEST(( result<void, X>( 1 ).has_error() ));
BOOST_TEST_EQ( (result<void, X>( 1 ).error().v_), 1 );
}
{
result<void, X> r;
BOOST_TEST( r.has_value() );
BOOST_TEST( !r.has_error() );
BOOST_TEST_EQ( std::move( r ).error().v_, 0 );
}
{
BOOST_TEST(( result<void, X>().has_value() ));
BOOST_TEST(( !result<void, X>().has_error() ));
BOOST_TEST_EQ( (result<void, X>().error().v_), 0 );
}
return boost::report_errors();
}
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